High severity · published Aug 23, 2022
CVE-2021-3690
A flaw was found in Undertow
7.5
CVSS
1.8%
EPSS
No
On KEV
Description
A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FU
Fuse · Redhat
1.0 · source: NVD
IC
Integration Camel K · Redhat
All versions, or not specified · source: NVD
IC
Integration Camel Quarkus · Redhat
All versions, or not specified · source: NVD
JE
Jboss Enterprise Application Platform · Redhat
7.3; 7.4 · source: NVD
OA
Openshift Application Runtimes · Redhat
All versions, or not specified · source: NVD
SS
Single Sign-on · Redhat
All versions, or not specified · source: NVD
UN
Undertow · Redhat
before 2.0.40; 2.1.0 before 2.2.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3690
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3690
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2021-3690
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1991299
Patch
https://github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea5902366973877
Exploit
https://issues.redhat.com/browse/UNDERTOW-1935
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